Roof jacket



Patented Nov. 1, 1927.

' FRANCIS J. MOORE, OF MINNEAPOLIS, MINNESOTA.

ROOF JACKET.

Application filed December 11, 1 925. SerialNfo. 74,768.

My invention relates to improvements in roof jackets, and moreparticularly to the caps therefor, and to thisend it consists of thenovel devices and combinations of de vices hereinafter described anddefined in the claim Inthe accompanying drawings, which 11- I lustratethe invention, likecharacters indiupper section of the roof jacket 5with a.

. Cate like parts throughout the several views.

Referring to the drawingsz Fig. 1 is a plan view of the improved roofjacket appliedtoa vent pipe;

Fig. 2 isafragmentary View partly in side elevation and partly incentralvertical section taken on the line 22 of Fig. l; and- Fig. 3 is aperspective view of the clamp-' ing collar. u a The numeral 4 indicatesa vent plpe around which is applied the improved roof acket 5 comprisingtelescopically connected sect1ons spaced from said vent pipe to form anairspace 6. Only the top portion of the upper section of the roof jacket5 is shown, and the lower portion thereof has a flashing for securingthesame to av roof with a watertight joint. The upper end of the a rspace 6 is closed by a cap 7, stamped from a single sheet of sheet lead,having a cylindrical body 8 that is telescoped 'ontothe vent'pipe 4. Thecap 7, from the lower end ofits body 8, flares outwardly and downwardlyto form a base 9 that rests on an outturned flange 10 formed 'with theupper end of the upper section of the roof jacket 5.

Formed with the periphery of the base 9 is a flange 11 that primarilyextends vertically downward below the flange 10, as indicated by brokenlines in Fig. 2. This flange 11 is folded under the flange 10 and formsbeaded interlocking engagement therewith and rigidly secures the cap 7to the tight joint. The cap 7 at the upper end of top 12 of said cap,-and which top has an axial opening 13, the diameter of which is its body8 curves upwardly and inwardly over the upper end of the vent pipe 4 toform the materially less than that of'the body 8 and is also less thanthat of the internal diameter of the vent pipe 4.

To form a tight joint between the cap body 8 and the vent pipe 4 tner eis applied around said body a transversely divided clamping'collar 14,the ends of which have eyes 15 through which is inserted a nutequippeddraw bolt 16; I Thegap' between the ends of the clamping collar 14 isclosed by a. joint strip 17 having sleeve-like ends 18 through which theend portions of the clamping collar 14 extend with freedom for endwisemovement. ,This joint strip 17 isfchan nel-shaped in cross section andthe draw bolt v 16 lies therein.

Obviously, by tightening the drawbolt 16,

the clamping collar 14-and jo-intstrip' 17 will be contracted onto thepliable'body 8 of the sheet lead cap and distorted and press the sameontothe vent pipe 4' to form a tight joint between the cap 7 and-ventpipe 4. The clamping collar 14 rests on the base '9 and is held againstupward movement therefrom by a pair of diametrically opposltecircumferentially extended retaining lugs 19 pressed from the body 8.There-.

taining lugs 19 also hold the clamping collar 14 and partscarriedthereby in assem-' bled relation with the cap 7 when the same i iscarried in stock.

By making the diameter of theopening 13 less than that of the internaldiameter of the vent pipe 4, Water will be prevented from getting inbet-ween the top of the cap 7 and theupper end of the vent pipe 4. Warmair in the air space 6 from the interior. of the building to which theroof jacket is applied will prevent theaccumulation' of frost in theupper end of the vent pipe 4.

By forming the cap 7 with a top that ex tends over the walls ofthe ventpipe 4, the

cap is given a finished and neat. appearance, and. at the same tlme,as'previously stated,

prevents water from entering between the cap and vent pipe.

The above described invention has been put into extensive commercialuseand has proven highly efficient for'the purpose had in view. 7 What Iclaim s:

.A cap of soft metal for rooffjackets com prising,'an upper cylindricalbody portion,

the upper end portion of which is turned inwardly to provide a flatannular top flange adapted to rest on the top of a vent pipe and jacket,said body portion being formed with defining an axial opening of lessdiameter radially projecting lugs pressed from said than said bodyportion, and a lower base body adjacent the flared base portion to re-10 portion which is flared outwardly and termitain a clamping collar ofcircular cross-secnates in an annular depending flange of ,tion.

V greater diameter than said body portion'and In testimony whereof Iaifix my signature.

adapted to be crimped under a flange'on a V FRANCIS J. MOORE;

